I have:
package com.darlik.test;
import org.junit.Assert;
public class Test { public static void main(String[] args) { assertTrue(1, 2); }
}package with org.junit is set and working but in line with assertTrue i have error:
The method assertTrue(int, int) is undefined for the type Test
Why? I use Eclipse.
35 Answers
assertTrue is based on a single boolean condition. For example
assertTrue(1 == 2);You need to import the statement statically to use
import static org.junit.Assert.assertTrue;Typically, however assertEquals is used when comparing 2 parameters, e.g.
public class MyTest { @Test public void testAssert() throws Exception { assertEquals(1, 2); }
}You have to specify the class that defines that method:
Assert.assertTrue(condition);Furthermore you're calling the method with 2 parameters which makes no sense. assertTrue expects a single boolean expression.
Although you can also do this by using a static import:
import static org.junit.Assert.*;which will allow you to call it as assertTrue(condition); instead.
From the doc : assertTrue(boolean) or assertTrue(String, boolean) if you want to add a message.
AssertTrue assert that a condition is true, you still have to code such condition for it to be evaluated at runtime.
Better try assertThat with matchers. Check this blog about it
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
.... @Test public void testNum() { assertThat(repo.getNum(), is(equalTo(111)));
}Delete the module-info.java file if there is any in the project. It's not necessary and is only used if you're using Java's built-in module system.
